/*
 *
 * (c) Copyright Ascensio System Limited 2010-2018
 *
 * This program is freeware. You can redistribute it and/or modify it under the terms of the GNU 
 * General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html). 
 * In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that 
 * Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
 *
 * THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
 * FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
 *
 * You can contact Ascensio System SIA by email at sales@onlyoffice.com
 *
 * The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display 
 * Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
 *
 * Pursuant to Section 7 § 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains 
 * relevant author attributions when distributing the software. If the display of the logo in its graphic 
 * form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE" 
 * in every copy of the program you distribute. 
 * Pursuant to Section 7 § 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
 *
*/


using System;

namespace ASC.Notify.Patterns
{
    public sealed class ReplacePatternFormatter : PatternFormatter
    {
        public const string DefaultPattern = @"[[]%(?<tagName>[a-zA-Z0-9_\-.]+)%[]]";

        public ReplacePatternFormatter()
            : base(DefaultPattern)
        {
        }

        internal ReplacePatternFormatter(string tagPattern, bool formatMessage)
            : base(tagPattern, formatMessage)
        {
        }

        protected override string FormatText(string text, ITagValue[] tagsValues)
        {
            if (string.IsNullOrEmpty(text)) return text;

            var formattedText = RegEx.Replace(text,
                match =>
                {
                    var value = Array.Find(tagsValues, v => v.Tag == match.Groups["tagName"].Value);
                    return value != null && value.Value != null ? Convert.ToString(value.Value) : match.Value;
                });
            return formattedText;
        }
    }
}
